Home / 89,520.12-134,196.30-30,314.40

Finding the Fourth Proportional to 89,520.12, 134,196.30 and 30,314.40

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Solution

The fourth proportional to 89,520.12, 134,196.30 and 30,314.40 is: 45,443.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,520.12 : 134,196.30 = 30,314.40 : x
  2. Step 2: Convert to fraction form
    89,520.12/134,196.30 = 30,314.40/x
  3. Step 3: Cross multiply
    89,520.12x = 134,196.30 × 30,314.40
  4. Step 4: Simplify right side
    89,520.12x = 4,068,080,316.72
  5. Step 5: Solve for x
    x = 4,068,080,316.72/89,520.12
  6. Step 6: Final answer
    x = 45,443.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.